Patent DE869527C successfully refreshed from Google Patents.
US2638964A
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US
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Machine for heat-sealing thermoplastic materials
Assignee: Amsco Packaging Machinery Inc
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Filing: 1950-02-07
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Granted: 1953-05-19
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Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest J Andina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:20
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7891; B29C66/00; B29C66/004; B29C66/0042; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8221; B29C66/8225; B29C66/83; B29C66/832; B29C66/8322; B29C66/90; B29C66/96; B29C66/967; B29C66/9672; B31; B31B; B31B70/00; B31B70/60; B31B70/64; Y; Y10; Y10T; Y10T83/00; Y10T83/283; Y10T83/293
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |